JPH11171219A - Bottle body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bottle body which is easy to recycle, which is likely to eject contents out of the bottle body even with a simple mouth structure and which reliably prevents the contents from leaking out of the bottle body when a cap is attached to the mouth. SOLUTION: A part of a periphery of an upper end of a side wall 5 of a mouth 3 of the bottle body is notched to form a gutter-like ejection part 6 rising outward at a predetermined angle with respect to the side wall 5. A cap 4 comprises a disk-like closure 10 of a larger diameter than an outer diameter of the mouth 3 of the bottle body, a cylindrical outer cylinder 11 extending downward from an outer peripheral rim of the closure 10 along an outer peripheral face of the side wall 5 of the mouth 3 and a cylindrical inner cylinder 12 extending from the closure 10 inside the outer cylinder 11 along an inner peripheral face of the side wall 5 of the mouth 3 which are integrally formed. The inner cylinder 12 is equipped with an inner peripheral pressure contact part 18 in pressure contact with an entire circumference on a side wall inner peripheral face of the side wall 5 of the mouth 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a bottle made of synthetic resin or the like.

[0002]

2. Description of the Related Art Conventionally, as a container for soy sauce or mirin, a bottle body of polyethylene terephthalate, a substantially cylindrical inner plug made of polyethylene attached to the mouth of the bottle body, and
There is known a bottle body composed of a polyethylene or polypropylene cap detachably attached to the tip of the inner plug.

[0003] The inner stopper is provided with a spout for discharging the contents of the bottle main body, and the spout has a smaller diameter than the mouth of the bottle main body so that the amount of the contents to be discharged can be adjusted. In addition to providing this spout, to prevent the contents of the bottle body from leaking when the cap is attached to the inner stopper,
The structure of the inner stopper must be complicated. Since it is difficult to form such an inner plug integrally with the polyethylene terephthalate bottle main body, the inner plug is formed of polyethylene separately from the bottle main body. Further, the inner plug is firmly attached to the bottle main body in order to prevent the contents from leaking out from a mounting portion with the bottle main body.

[0004] In order to effectively use resources of such a bottle, it is conceivable to recycle the used bottle body. In this recycling process, in order to prevent different materials from being mixed, it is necessary to separate the bottle main body and the inner plug from the above configuration. But,
As described above, since the inner plug is firmly attached to the bottle main body, this separating operation is very troublesome.

[0005] When the contents of the bottle main body contain salt such as soy sauce, it is necessary to prevent rust from being generated on the cutting machine or the like used in the recycling process due to the salt and reducing the durability of the cutting machine or the like. It is necessary to clean the inside of the bottle body. This washing is performed by injecting the washing liquid into the bottle main body. However, as described above, since the spout is smaller in diameter than the mouth of the bottle main body, this operation is very troublesome. Therefore, it is conceivable to remove the inner plug and inject the cleaning liquid from a relatively large mouth, but there is a disadvantage that the efficiency of the recycling process is not significantly improved because the work of separating the inner plug is very troublesome. .

[0006] In order to solve the above-mentioned inconvenience and to carry out the recycling process efficiently, it is preferable to integrally mold the inner plug and the bottle main body with polyethylene terephthalate. However, as described above, the inner plug having a complicated structure is combined with the bottle main body. It is difficult to form them integrally. That is, in order to integrally form the inner plug and the bottle main body with polyethylene terephthalate, the structure of the mouth is simplified by simplifying the structure for attaching a spout and a cap having a smaller diameter than the mouth. There is a need. But,
The simplified structure of the mouth of the bottle body makes it difficult to pour the contents out of the bottle body, and prevents the contents from leaking out of the bottle body when the cap is attached to the tip. There was an inconvenience that it became difficult to prevent.

[0007]

SUMMARY OF THE INVENTION In the present invention, the recycling process is easy, the structure of the mouth is simple, the contents can be easily poured out of the bottle body, and a cap is attached to the mouth. An object of the present invention is to provide a bottle body that can reliably prevent the contents from leaking out of the bottle main body at times.

[0008]

A bottle body according to the present invention for solving the above-mentioned problems comprises a synthetic resin bottle main body and a synthetic resin bottle detachably attached to an opening formed above the bottle main body. In a bottle body having a cap made of resin, the mouth of the bottle body is formed by cutting out a part of the upper end of the side wall of the mouth, and has a pouring portion for pouring out the contents of the bottle body. The cap has a closed portion having a diameter larger than the outer diameter of the mouth, and extends downward from the outer peripheral edge of the closed portion along the outer circumferential surface of the side wall of the mouth, and is pressed against the outer circumferential surface of the side wall of the mouth. A cylindrical outer cylindrical portion to be extended from a closed portion inside the outer cylindrical portion along the inner peripheral surface of the side wall of the mouth portion, and to the inner peripheral surface of the side wall of the mouth portion below the pouring portion. And a cylindrical inner cylinder portion to be pressed against.

According to the bottle body having such a configuration, since the spout portion is provided by cutting out a part of the mouth of the bottle body, the amount of the spout of the contents is adjusted by the spout portion, and the contents are adjusted. Is easy to pour out. In addition, since the bottle main body is integrally formed of a synthetic resin such as polyethylene terephthalate, it is not necessary to perform the conventional work of separating the inner plug from the bottle main body. Further, the spouting portion is formed by cutting out a part of the mouth of the bottle body, and does not reduce the diameter of the mouth portion. And the bottle main body can be efficiently cleaned. As described above, the bottle main body does not require the conventional separating operation and the washing operation can be performed efficiently, so that the recycling process can be performed efficiently.

When the cap is attached to the mouth, the inner cylindrical portion of the cap is pressed against the inner peripheral surface of the side wall of the mouth below the pouring portion. Also, at this time, the outer cylindrical portion of the cap is in pressure contact with the outer peripheral surface of the side wall of the mouth, whereby the inner cylindrical portion of the cap is pressed outward. Therefore, the inner cylindrical portion of the cap is more strongly pressed against the inner peripheral surface of the side wall of the mouth, and even if the spout is formed in the mouth, it is possible to reliably prevent the contents from leaking out of the bottle main body. it can.

When the cap is attached to the mouth of the bottle body, an inward drag and an outward force as described above are applied to the inner cylindrical portion of the cap by pressing against the inner peripheral surface of the side wall of the mouth. Due to these forces, the lower end of the inner cylindrical portion of the cap may fall inward, and the inner cylindrical portion may not be properly pressed against the inner peripheral surface of the side wall of the mouth.

Therefore, inside the inner cylindrical portion of the cap,
A support portion is provided for restricting the inner cylinder portion from moving inward when pressed against the inner peripheral surface of the side wall of the mouth portion.

According to the bottle body having such a configuration, when the inner cylindrical portion of the cap is pressed against the inner peripheral surface of the side wall of the mouth, the lower end portion of the inner cylindrical portion is restricted from moving inward. Therefore, when the cap is attached to the mouth of the bottle main body, the inner cylindrical portion of the cap appropriately presses against the inner peripheral surface of the side wall of the mouth, so that the contents of the bottle main body do not leak.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a bottle body of the present invention will be described with reference to the drawings. 1 is an upper front view of the bottle body, FIG. 2 is a side sectional view of a mouth of the bottle body and a cap fitted to the mouth, and FIG. 3 is a top view of the mouth of the bottle body. 4 is a sectional view taken along line IV-IV in FIG.

As shown in FIG. 1, a bottle body 1 has a polyethylene terephthalate bottle body 2 in which contents such as soy sauce are stored, and a substantially cylindrical mouth formed at the upper end of the bottle body 2. It has a portion 3 and a polyethylene or polypropylene cap 4 fitted to the mouth portion 3.

As shown in FIG. 2, the mouth 3 rises outward at a predetermined angle with respect to the side wall 5 of the mouth 3, and
As shown in the figure, a gutter-shaped pouring portion 6 whose diameter is reduced outward is formed by cutting out a part of the upper end of the side wall 5 in the circumferential direction. Further, on the outer peripheral surface of the side wall 5 below the pouring portion 6 of the mouth portion 3, a first annular convex portion 7, a second annular convex portion 8, and a third annular convex The part 9 is projected from the top in order. The first annular convex portion 7 and the second annular convex portion 8 have substantially the same diameter, but the third annular convex portion 9 has a slightly larger diameter.

As shown in FIG. 2, the cap 4 has a disc-shaped closing portion 10 having a diameter larger than the outer diameter of the mouth portion 3 of the bottle main body 2.
A cylindrical outer cylinder portion 11 is provided extending downward from the outer peripheral edge of the closing portion 10 along the outer peripheral surface of the side wall 5 of the mouth portion 3. 3 side walls 5
Is formed integrally with a cylindrical inner cylinder portion 12 provided to extend downward along the inner peripheral surface of the inner cylinder.

Between the outer cylindrical portion 11 and the inner cylindrical portion 12 of the closing portion 10, the ring extends over the entire circumference and is connected in an annular shape, and comes into contact with the upper end of the side wall 5 of the mouth portion 3 as will be described later. A convex portion 13 that determines the height with respect to the mouth portion 3 is provided to protrude downward. The outer cylindrical portion 11 is provided with a first outer circumferential pressure contact portion 14 which is divided at a position dividing the inner circumferential surface into three equal portions, extends in the circumferential direction, and presses against the lower end portion of the first annular convex portion 7 of the mouth portion 3. Have been. The outer cylinder 11 has a second outer periphery that extends over the entire circumference to an inner peripheral surface below the first outer peripheral pressure contact portion 14 and is connected in an annular manner, and that is pressed against the lower end of the second annular convex portion 8 of the mouth 3. The press contact portion 15 is provided in a protruding manner. A knob 16 is provided below the outer peripheral surface of the outer cylinder 11. The lower part of the outer cylinder part 11 including the second outer peripheral pressure contact part 15 is attached to the first outer peripheral pressure contact part 14.
An easily breakable portion 17 is formed at a position slightly higher than the knob 16 so as to be easily broken from the upper portion of the outer cylindrical portion 11 including the knob 16.

The inner cylindrical portion 12 is provided with an inner peripheral pressure contact portion 18 extending over the entire outer peripheral surface and connected in an annular shape and located below the pouring portion 6 of the mouth portion 3. Inner cylinder 12
A plurality of triangular thin plates having a hypotenuse on a straight line connecting a point A having substantially the same height as the inner peripheral pressure contact portion 18 on the inner peripheral surface thereof and a center point B of the closing portion 10 are formed in the circumferential direction. It is supported from the inside by a support part 19 provided equally.

Before opening the bottle body 1 having the above structure and opening the bottle body 2 before opening, the cap 4
When the container 1 is attached to the mouth portion 3 of the bottle main body 2 and resealed, when the used bottle 1 is recycled, the following description will be given in order. Here, “before and after opening” means before and after the lower portion of the outer cylinder portion 11 including the second outer peripheral pressure contact portion 15 is broken from the upper portion of the outer cylinder portion 11 including the first outer peripheral pressure contact portion 14.

Before opening, as shown in FIG. 2, the inner peripheral pressure contact portion 18 provided on the inner cylindrical portion 12 of the cap 4 is connected to the inner peripheral surface of the side wall 5 below the pouring portion 6 of the mouth portion 3. Is pressed against. The convex portion 13 provided on the closing portion 10 of the cap 4 comes into contact with the upper end of the side wall 5 of the mouth 3, and the height of the cap 4 with respect to the mouth 3 is determined. Thereby, the cap 4
The first outer peripheral pressure contact portion 14 and the second outer peripheral pressure contact portion 15 provided on the outer cylindrical portion 11 are provided with a first annular convex portion 7 and a second annular convex portion 8 provided on the outer peripheral surface of the side wall 5 of the mouth portion 3. Press firmly to the lower end of each. At this time, the lower end of the outer cylindrical portion 11 of the cap 4 is in pressure contact with the third annular convex portion 9 of the mouth 3.

The outer cylindrical portion 11 receives an outward force due to the pressure contact with the mouth portion 3 and the inner cylindrical portion 12 also receives the outward force, so that the inner cylindrical portion 12 of the cap 4 is formed on the side wall 5 of the mouth portion 3. It is more strongly pressed against the inner peripheral surface. Further, since the inner cylindrical portion 12 of the cap 4 is supported from the inside by the support portion 19, the inner cylindrical portion 1
The inner peripheral pressure contact portion 18 provided on the second member 2 is appropriately pressed against the inner peripheral surface of the side wall 5 of the mouth portion 3. As described above, the leakage of the contents out of the bottle main body 2 is reliably prevented. Furthermore, even if the content leaks from the mouth 3, the second inner circumferential pressure contact portion 15 of the cap 4 is pressed against the lower end of the second annular projection 8 of the mouth 3, so that the content is not Leakage from the bottle body 1 is prevented.

Next, the case where the bottle body 1 is opened and the contents of the bottle body 2 are poured out will be described. Although not shown,
When the knob 16 is pulled in the horizontal direction with a predetermined force or more, the cap 4 is broken along the easily breakable portion 17 and the bottle 1 is opened. At this time, the pressure contact between the second outer peripheral pressure contact portion 15 of the cap 4 and the lower end of the second annular convex portion 8 of the mouth 3 is released. In addition, the first outer peripheral pressure contact portion 14 is
Is divided into the inner peripheral surface of the outer cylindrical portion 11, and the force of pressing the first annular convex portion 7 of the mouth portion 3 against the entire outer peripheral surface of the outer cylindrical portion 11 is compared with the case where the outer peripheral portion 11 protrudes over the entire circumference. And small Therefore,
By pulling the cap 4 upward, the cap 4 can be easily removed from the mouth 3.

With the pouring section 6 facing down, the bottle body 2
When tilted, the contents flow according to the pouring section 6. As shown in FIG. 4, the pouring portion 6 is inclined upward and outward with respect to the side wall 5 of the mouth portion 3, and has a gutter shape having a narrowed tip as shown in FIG. 3. The contents can be easily poured out while adjusting the amount of pouring.

Next, a case where the cap 4 is attached to the mouth portion 3 and resealed will be described. Inner cylinder part 1 of cap 4
Since the lower end of 2 is not supported by the support 19 as shown in FIG.
Easy to insert into mouth 3. When the cap 4 is further lowered, the inner peripheral pressure contact portion 18 of the inner cylindrical portion 12 is moved to the side wall 5 of the mouth 3.
A force is applied to the inner cylindrical portion 12 to fall inward by contacting the inner peripheral surface of the inner cylindrical portion. However, since the portion other than the lower end portion of the inner cylindrical portion 12 is supported by the support portion 19, the inner circumferential pressure contact portion 18 is not sufficiently pressed against the inner circumferential surface of the side wall 5 of the mouth portion 3.
Will not fall inward. Therefore, the cap 4 is lowered while the inner peripheral pressure contact portion 18 appropriately presses and slides on the inner peripheral surface of the side wall 5 of the mouth portion 3. Then, the first outer peripheral pressure contact portion 14 of the outer cylindrical portion 11 of the cap 4 is
When the outer cylindrical portion 11 abuts on the upper end, the outer cylindrical portion 11 expands in diameter such that the lower end thereof falls outward. When the cap 4 goes down further,
The outer cylinder portion 11 is reduced in diameter to substantially the original diameter, and the first outer peripheral pressure contact portion 14 contacts the lower end of the first annular convex portion 7 of the mouth portion 3. The lowering of the cap 4 is restricted by the projection 13 contacting the upper end of the side wall 5 of the mouth 3, and the cap 4 is attached to the mouth 3.

Finally, a case will be described in which the contents of the bottle body 2 are used up and the used bottle body 2 is recycled. As described above, in the recycling process, a separating operation for preventing different materials from being mixed and a cleaning operation for preventing a decrease in durability of a cutting machine or the like are necessary.
Once the cap 4 has been removed from the bottle body 2, the bottle body 2 is made of only polyethylene terephthalate, so that no further separation work is required. Further, a cleaning liquid (not shown) can be injected into the bottle main body 2 from the mouth 3. Therefore, the bin body 2 is suitable for recycling because the separation operation is simple and the cleaning operation can be performed efficiently.

In the present embodiment, the bottle body 2 is made of polyethylene terephthalate and the cap 4 is made of polyethylene or polypropylene. However, the bottle body 2 is made of only synthetic resin other than polyethylene terephthalate, and the cap 4 is made of polyethylene or polyethylene. It may be formed from a synthetic resin other than polypropylene.

[Brief description of the drawings]

FIG. 1 is an upper front view of a bottle body.

FIG. 2 is a side cross-sectional view of a mouth of a bottle main body and a cap fitted to the mouth.

FIG. 3 is a top view of the mouth of the bottle main body.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

[Explanation of symbols]

1 ‥ bottle body, 2 ‥ bottle body, 3 ‥ mouth, 4 ‥ cap,
5 mm side wall, 6 mm pouring section, 10 mm closed section, 11 mm outer cylinder section,
12 ‥ inner cylinder, 19 ‥ support

Claims (2)

[Claims] 1. A bottle body having a synthetic resin bottle main body and a synthetic resin cap detachably attached to a mouth opened above the bottle main body, wherein the mouth of the bottle main body is And a pouring portion formed by cutting out a part of an upper end of a side wall of the mouth portion to pour out the contents of the bottle main body, wherein the cap has a closing portion having a diameter larger than an outer diameter of the mouth portion. When,
A cylindrical outer cylinder portion extending downward from the outer peripheral edge of the closing portion along the outer peripheral surface of the side wall of the mouth and pressing against the outer peripheral surface of the side wall of the mouth portion; A cylindrical inner cylinder portion extending downward along the inner peripheral surface of the side wall of the mouth, and being pressed against the inner peripheral surface of the side wall of the mouth portion below the pouring portion. 2. A cap is provided inside the inner cylindrical portion of the cap, the supporting portion restricting the inner cylindrical portion from moving inward when pressed against the inner peripheral surface of the side wall of the mouth. The bottle body according to claim 1, wherein